4-104 Muhammad ibn Ali Majiluyih - may God be pleased with him - narrated that Muhammad ibn Yahya al-Attar quoted Muhammad ibn Ahmad, on the authority of Muhammad ibn Isa, on the authority of Ibn Faz’zal who narrated that
Abil Hassan - the second - that is Al-Ridha (MGB) said, “One can return a slave within one year for the following four causes: insanity; leprosy; vitiligo and blockage of the vagina. ”